Medical Science Liaison (MSL)
- Thailand - Bangkok
The Medical Science Liaison (MSL) is a field‑based Medical Affairs professional responsible for executing high‑quality, non‑promotional scientific exchange with healthcare professionals and external experts within assigned therapeutic areas within Thailand.
The MSL serves as Pfizer’s primary scientific interface in the field, delivering accurate, balanced, and timely scientific information to support evidence‑based clinical decision making and improved patient outcomes.
Operating within an approved medical and scientific communication strategy, the MSL focuses on individualized, needs‑based engagement, insight generation, and scientific partnership building, while upholding the highest standards of medical integrity, compliance, and professionalism.
1. Field‑Based Scientific Engagement: Executes proactive and reactive, non‑promotional scientific exchange with healthcare professionals, aligned with approved medical strategies, key scientific narratives, and CMAO standards.
2. Execution of Scientific Communication Strategy: Delivers scientific communication plans for assigned products and therapeutic areas as defined by Medical Lead / Field Medical Manager, including:
· Dissemination of approved clinical data and scientific updates
· Tailored scientific discussions based on stakeholder needs and expertise
· Execution of omnichannel medical engagement (e.g. face‑to‑face, virtual, and digital scientific interactions) within defined guidance
3. Stakeholder Relationship Development: Builds and maintains trusted, long‑term scientific relationships with assigned healthcare professionals and external experts through consistent, high‑quality engagement.
4. Medical Insight Capture & Reporting: Systematically captures medical insights, scientific questions, and unmet needs from the field using approved tools and processes, and communicates these insights to inform medical strategy, evidence generation, and lifecycle planning.
5. Medical Information & Scientific Support: Provides accurate, balanced, and timely responses to unsolicited medical inquiries in accordance with approved processes, local regulations, and Pfizer policies.
6. Collaboration with Field Medical Colleagues: Collaborates closely with Field Medical Managers and peer MSLs to ensure consistency of scientific messaging, sharing of best practices, and continuous improvement of field medical excellence.
The MSL role is considered as Customer-Facing Medical role
REQUIRED SKILLS
- Degree in Medical, Pharmaceutical, Biomedical, or Life Sciences (e.g. MD, MBBS, DDS, PharmD, PhD, MSc).
- Solid foundational knowledge in clinical medicine, disease states, and evidence‑based healthcare.
- Typically 2–5 years experience in Medical Affairs, clinical research, or a scientific role within the healthcare or pharmaceutical industry.
Pfizer is an equal opportunity employer and complies with all applicable equal employment opportunity legislation in each jurisdiction in which it operates.
To learn more about acceptable and prohibited uses of AI during the recruitment process, please review our candidate AI-use guidelines available on Pfizer Careers.

MedicalBreakthroughs that change patients’ lives
Research confirms what intuition tells us: that purpose-driven companies perform better, are more innovative, attract and retain the best people, and know how to unleash the power of those people. Pfizer’s purpose—Breakthroughs that change patients' lives—fuels everything we do and reflects our passion for building on our legacy as one of the greatest contributors of good to the world.
Each word in our purpose has meaning and reflects the value we strive to bring to patients and society:
“Breakthroughs” - These are the innovations, scientific and commercial, that we seek to deliver every day. All colleagues, regardless of role, level or location, strive for breakthroughs every day.
“Change” - We want to do more than simply improve patients’ medical conditions; we want to dramatically change their lives for the better.
“Patients’ lives” - We consider not only patients, but everyone they touch—including their families, caregivers, and friends—and everything they love to do. It’s an intentionally holistic view.
Our purpose ensures that patients remain at the center of all we do. We live our purpose by sourcing the best science in the world; partnering with others in the healthcare system to improve access to our medicines; using digital technologies to enhance our drug discovery and development, as well as patient outcomes; and leading the conversation to advocate for pro-innovation/pro-patient policies.
Every decision we make and every action we take is done with the patient in mind—and to nurture an environment where breakthroughs can thrive.
Our Values
To fully realize Pfizer’s purpose, we have established a clear set of expectations regarding “what” we need to achieve for patients and “how” we will go about achieving those goals.
The “how” is represented by four simple, powerful values—courage, excellence, equity, and joy—that define our company and our culture.
Courage: Breakthroughs start by challenging convention, especially in the face of uncertainty or adversity. This happens when we think big, speak up, and are decisive.
Excellence: We can only change patients’ lives when we perform at our best together. This happens when we focus on what matters, agree who does what, and measure our outcomes.
Equity: We believe that every person deserves to be seen, heard, and cared for. This happens when we are inclusive, act with integrity, and reduce healthcare disparities.
Joy: We give ourselves to our work, but it also gives to us. We find joy when we take pride, recognize one another, and have fun.
Benefits at Pfizer
Pfizer offers competitive compensation and benefits programs designed to meet the diverse needs of our colleagues. Our Pay for Performance Philosophy and Practices reward colleagues based on the contributions they make to our business.
Our Competitive Benefits Programs help our colleagues by:
- Promoting Health and Wellness to help colleagues maintain and improve their physical and mental wellbeing. Pfizer offerings include health and disability insurance, preventative health programs, medical screenings, free or reduced-cost vaccinations, discounts on Pfizer products, mental health support, nutrition and fitness counseling and more.
- Strengthening Colleagues’ Financial Security by providing company contributions to retirement plans, life insurance and financial planning education to help colleagues achieve their financial goals.
- Providing Benefits and Time off for the Moments that Matter to ensure Pfizer colleagues have the time away from the office to recharge, recover and return to work as the best version of themselves. Vacation, Holiday time and Sick time are just the beginning, with a 12 week parental leave policy for both parents of a new born, 10 day of caregiver leave for those times when your family needs you whether it’s a child, spouse or parent, bereavement leave, and additional country-specific programs.
- And so much more, depending on your country and site, Pfizer offers childcare facilities or discount programs, on-site health and/or fitness centers, movement and mindfulness solutions, “Log in for your Day” work flexibility and so much more.
For U.S. based jobs, view an overview of Pfizer’s U.S. benefits program (opens in a new window)